diff --git a/container/mts/encoder.go b/container/mts/encoder.go
index 83a7b403..a50c2615 100644
--- a/container/mts/encoder.go
+++ b/container/mts/encoder.go
@@ -121,10 +121,10 @@ const (
 	ptsOffset = 700 * time.Millisecond
 
 	// PCRFreq is the base Program Clock Reference frequency.
-	PCRFreq = 90000 // Hz
+	PCRFrequency = 90000 // Hz
 
 	// PTSFreq is the presentation timestamp frequency.
-	PTSFreq = 90000
+	PTSFrequency = 90000
 )
 
 // Encoder encapsulates properties of an mpegts generator.